1: /*
2: * BIRD -- Router Advertisement Configuration
3: *
4: *
5: * Can be freely distributed and used under the terms of the GNU GPL.
6: */
7:
8: CF_HDR
9:
10: #include "proto/radv/radv.h"
11:
12: CF_DEFINES
13:
14: #define RADV_CFG ((struct radv_config *) this_proto)
15: #define RADV_IFACE ((struct radv_iface_config *) this_ipatt)
16: #define RADV_PREFIX this_radv_prefix
17: #define RADV_RDNSS (&this_radv_rdnss)
18: #define RADV_DNSSL (&this_radv_dnssl)
19:
20: static struct radv_prefix_config *this_radv_prefix;
21: static struct radv_rdnss_config this_radv_rdnss;
22: static struct radv_dnssl_config this_radv_dnssl;
23: static list radv_dns_list; /* Used by radv_rdnss and radv_dnssl */
24: static u8 radv_mult_val; /* Used by radv_mult for second return value */
25:
26:
27: CF_DECLS
28:
29: CF_KEYWORDS(RADV, PREFIX, INTERFACE, MIN, MAX, RA, DELAY, INTERVAL,
30: MANAGED, OTHER, CONFIG, LINGER, LINK, MTU, REACHABLE, TIME, RETRANS,
31: TIMER, CURRENT, HOP, LIMIT, DEFAULT, VALID, PREFERRED, MULT,
32: LIFETIME, SKIP, ONLINK, AUTONOMOUS, RDNSS, DNSSL, NS, DOMAIN,
33: LOCAL, TRIGGER, SENSITIVE, PREFERENCE, LOW, MEDIUM, HIGH, PROPAGATE,
34: ROUTE, ROUTES, RA_PREFERENCE, RA_LIFETIME)
35:
36: CF_ENUM(T_ENUM_RA_PREFERENCE, RA_PREF_, LOW, MEDIUM, HIGH)
37:
38: %type<i> radv_mult radv_sensitive radv_preference
39:
40: CF_GRAMMAR
41:
42: CF_ADDTO(proto, radv_proto)
43:
44: radv_proto_start: proto_start RADV
45: {
46: this_proto = proto_config_new(&proto_radv, $1);
47: init_list(&RADV_CFG->patt_list);
48: init_list(&RADV_CFG->pref_list);
49: init_list(&RADV_CFG->rdnss_list);
50: init_list(&RADV_CFG->dnssl_list);
51: };
52:
53: radv_proto_item:
54: proto_item
55: | INTERFACE radv_iface
56: | PREFIX radv_prefix { add_tail(&RADV_CFG->pref_list, NODE this_radv_prefix); }
57: | RDNSS { init_list(&radv_dns_list); } radv_rdnss { add_tail_list(&RADV_CFG->rdnss_list, &radv_dns_list); }
58: | DNSSL { init_list(&radv_dns_list); } radv_dnssl { add_tail_list(&RADV_CFG->dnssl_list, &radv_dns_list); }
59: | TRIGGER prefix {
60: RADV_CFG->trigger_prefix = $2.addr;
61: RADV_CFG->trigger_pxlen = $2.len;
62: RADV_CFG->trigger_valid = 1;
63: }
64: | PROPAGATE ROUTES bool { RADV_CFG->propagate_routes = $3; }
65: ;
66:
67: radv_proto_opts:
68: /* empty */
69: | radv_proto_opts radv_proto_item ';'
70: ;
71:
72: radv_proto:
73: radv_proto_start proto_name '{' radv_proto_opts '}';
74:
75:
76: radv_iface_start:
77: {
78: this_ipatt = cfg_allocz(sizeof(struct radv_iface_config));
79: add_tail(&RADV_CFG->patt_list, NODE this_ipatt);
80: init_list(&this_ipatt->ipn_list);
81: init_list(&RADV_IFACE->pref_list);
82: init_list(&RADV_IFACE->rdnss_list);
83: init_list(&RADV_IFACE->dnssl_list);
84:
85: RADV_IFACE->min_ra_int = -1; /* undefined */
86: RADV_IFACE->max_ra_int = DEFAULT_MAX_RA_INT;
87: RADV_IFACE->min_delay = DEFAULT_MIN_DELAY;
88: RADV_IFACE->prefix_linger_time = -1;
89: RADV_IFACE->route_linger_time = -1;
90: RADV_IFACE->current_hop_limit = DEFAULT_CURRENT_HOP_LIMIT;
91: RADV_IFACE->default_lifetime = -1;
92: RADV_IFACE->default_lifetime_sensitive = 1;
93: RADV_IFACE->default_preference = RA_PREF_MEDIUM;
94: RADV_IFACE->route_lifetime = -1;
95: RADV_IFACE->route_lifetime_sensitive = 0;
96: RADV_IFACE->route_preference = RA_PREF_MEDIUM;
97: };
98:
99: radv_iface_item:
100: MIN RA INTERVAL expr { RADV_IFACE->min_ra_int = $4; if ($4 < 3) cf_error("Min RA interval must be at least 3"); }
101: | MAX RA INTERVAL expr { RADV_IFACE->max_ra_int = $4; if (($4 < 4) || ($4 > 1800)) cf_error("Max RA interval must be in range 4-1800"); }
102: | MIN DELAY expr { RADV_IFACE->min_delay = $3; if ($3 <= 0) cf_error("Min delay must be positive"); }
103: | MANAGED bool { RADV_IFACE->managed = $2; }
104: | OTHER CONFIG bool { RADV_IFACE->other_config = $3; }
105: | LINK MTU expr { RADV_IFACE->link_mtu = $3; if ($3 < 0) cf_error("Link MTU must be 0 or positive"); }
106: | REACHABLE TIME expr { RADV_IFACE->reachable_time = $3; if (($3 < 0) || ($3 > 3600000)) cf_error("Reachable time must be in range 0-3600000"); }
107: | RETRANS TIMER expr { RADV_IFACE->retrans_timer = $3; if ($3 < 0) cf_error("Retrans timer must be 0 or positive"); }
108: | CURRENT HOP LIMIT expr { RADV_IFACE->current_hop_limit = $4; if (($4 < 0) || ($4 > 255)) cf_error("Current hop limit must be in range 0-255"); }
109: | DEFAULT LIFETIME expr radv_sensitive {
110: RADV_IFACE->default_lifetime = $3;
111: if (($3 < 0) || ($3 > 9000)) cf_error("Default lifetime must be in range 0-9000");
112: if ($4 != -1) RADV_IFACE->default_lifetime_sensitive = $4;
113: }
114: | ROUTE LIFETIME expr radv_sensitive {
115: RADV_IFACE->route_lifetime = $3;
116: if ($4 != -1) RADV_IFACE->route_lifetime_sensitive = $4;
117: }
118: | DEFAULT PREFERENCE radv_preference { RADV_IFACE->default_preference = $3; }
119: | ROUTE PREFERENCE radv_preference { RADV_IFACE->route_preference = $3; }
120: | PREFIX LINGER TIME expr { RADV_IFACE->prefix_linger_time = $4; }
121: | ROUTE LINGER TIME expr { RADV_IFACE->route_linger_time = $4; }
122: | PREFIX radv_prefix { add_tail(&RADV_IFACE->pref_list, NODE this_radv_prefix); }
123: | RDNSS { init_list(&radv_dns_list); } radv_rdnss { add_tail_list(&RADV_IFACE->rdnss_list, &radv_dns_list); }
124: | DNSSL { init_list(&radv_dns_list); } radv_dnssl { add_tail_list(&RADV_IFACE->dnssl_list, &radv_dns_list); }
125: | RDNSS LOCAL bool { RADV_IFACE->rdnss_local = $3; }
126: | DNSSL LOCAL bool { RADV_IFACE->dnssl_local = $3; }
127: ;
128:
129: radv_preference:
130: LOW { $$ = RA_PREF_LOW; }
131: | MEDIUM { $$ = RA_PREF_MEDIUM; }
132: | HIGH { $$ = RA_PREF_HIGH; }
133:
134: radv_iface_finish:
135: {
136: struct radv_iface_config *ic = RADV_IFACE;
137:
138: if (ic->min_ra_int == (u32) -1)
139: ic->min_ra_int = MAX_(ic->max_ra_int / 3, 3);
140:
141: if (ic->default_lifetime == (u32) -1)
142: ic->default_lifetime = 3 * ic->max_ra_int;
143:
144: if (ic->route_lifetime == (u32) -1)
145: ic->route_lifetime = 3 * ic->max_ra_int;
146:
147: if (ic->prefix_linger_time == (u32) -1)
148: ic->prefix_linger_time = 3 * ic->max_ra_int;
149:
150: if (ic->route_linger_time == (u32) -1)
151: ic->route_linger_time = 3 * ic->max_ra_int;
152:
153: if ((ic->min_ra_int > 3) &&
154: (ic->min_ra_int > (ic->max_ra_int * 3 / 4)))
155: cf_error("Min RA interval must be at most 3/4 * Max RA interval %d %d", ic->min_ra_int, ic->max_ra_int);
156:
157: if ((ic->default_lifetime > 0) && (ic->default_lifetime < ic->max_ra_int))
158: cf_error("Default lifetime must be either 0 or at least Max RA interval");
159:
160: if ((ic->route_lifetime > 0) && (ic->route_lifetime < ic->max_ra_int))
161: cf_error("Route lifetime must be either 0 or at least Max RA interval");
162:
163: if ((ic->prefix_linger_time > 0) && (ic->prefix_linger_time < ic->max_ra_int))
164: cf_error("Prefix linger time must be either 0 or at least Max RA interval");
165:
166: if ((ic->route_linger_time > 0) && (ic->route_linger_time < ic->max_ra_int))
167: cf_error("Route linger time must be either 0 or at least Max RA interval");
168:
169: RADV_CFG->max_linger_time = MAX_(RADV_CFG->max_linger_time, ic->route_linger_time);
170: };
171:
172:
173: radv_iface_opts:
174: /* empty */
175: | radv_iface_opts radv_iface_item ';'
176: ;
177:
178: radv_iface_opt_list:
179: /* empty */
180: | '{' radv_iface_opts '}'
181: ;
182:
183: radv_iface:
184: radv_iface_start iface_patt_list_nopx radv_iface_opt_list radv_iface_finish;
185:
186:
187: radv_prefix_start: prefix
188: {
189: this_radv_prefix = cfg_allocz(sizeof(struct radv_prefix_config));
190: RADV_PREFIX->prefix = $1.addr;
191: RADV_PREFIX->pxlen = $1.len;
192:
193: RADV_PREFIX->onlink = 1;
194: RADV_PREFIX->autonomous = 1;
195: RADV_PREFIX->valid_lifetime = DEFAULT_VALID_LIFETIME;
196: RADV_PREFIX->preferred_lifetime = DEFAULT_PREFERRED_LIFETIME;
197: };
198:
199: radv_prefix_item:
200: SKIP bool { RADV_PREFIX->skip = $2; }
201: | ONLINK bool { RADV_PREFIX->onlink = $2; }
202: | AUTONOMOUS bool { RADV_PREFIX->autonomous = $2; }
203: | VALID LIFETIME expr radv_sensitive {
204: RADV_PREFIX->valid_lifetime = $3;
205: if ($4 != -1) RADV_PREFIX->valid_lifetime_sensitive = $4;
206: }
207: | PREFERRED LIFETIME expr radv_sensitive {
208: RADV_PREFIX->preferred_lifetime = $3;
209: if ($4 != -1) RADV_PREFIX->preferred_lifetime_sensitive = $4;
210: }
211: ;
212:
213: radv_prefix_finish:
214: {
215: if (RADV_PREFIX->preferred_lifetime > RADV_PREFIX->valid_lifetime)
216: cf_error("Preferred lifetime must be at most Valid lifetime");
217:
218: if (RADV_PREFIX->valid_lifetime_sensitive > RADV_PREFIX->preferred_lifetime_sensitive)
219: cf_error("Valid lifetime sensitive requires that Preferred lifetime is sensitive too");
220: };
221:
222: radv_prefix_opts:
223: /* empty */
224: | radv_prefix_opts radv_prefix_item ';'
225: ;
226:
227: radv_prefix_opt_list:
228: /* empty */
229: | '{' radv_prefix_opts '}'
230: ;
231:
232: radv_prefix:
233: radv_prefix_start radv_prefix_opt_list radv_prefix_finish;
234:
235:
236:
237: radv_rdnss_node: ipa
238: {
239: struct radv_rdnss_config *cf = cfg_allocz(sizeof(struct radv_rdnss_config));
240: add_tail(&radv_dns_list, NODE cf);
241:
242: cf->server = $1;
243: cf->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
244: };
245:
246: radv_rdnss_start:
247: {
248: RADV_RDNSS->lifetime = 0;
249: RADV_RDNSS->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
250: };
251:
252: radv_rdnss_item:
253: | NS radv_rdnss_node
254: | LIFETIME radv_mult { RADV_RDNSS->lifetime = $2; RADV_RDNSS->lifetime_mult = radv_mult_val; }
255: ;
256:
257: radv_rdnss_finish:
258: {
259: if (EMPTY_LIST(radv_dns_list))
260: cf_error("No nameserver in RDNSS section");
261:
262: struct radv_rdnss_config *cf;
263: WALK_LIST(cf, radv_dns_list)
264: {
265: cf->lifetime = RADV_RDNSS->lifetime;
266: cf->lifetime_mult = RADV_RDNSS->lifetime_mult;
267: }
268: };
269:
270: radv_rdnss_opts:
271: /* empty */
272: | radv_rdnss_opts radv_rdnss_item ';'
273: ;
274:
275: radv_rdnss:
276: radv_rdnss_node
277: | '{' radv_rdnss_start radv_rdnss_opts '}' radv_rdnss_finish
278: ;
279:
280:
281: radv_dnssl_node: TEXT
282: {
283: struct radv_dnssl_config *cf = cfg_allocz(sizeof(struct radv_dnssl_config));
284: add_tail(&radv_dns_list, NODE cf);
285:
286: cf->domain = $1;
287: cf->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
288:
289: if (radv_process_domain(cf) < 0)
290: cf_error("Invalid domain dame");
291: };
292:
293: radv_dnssl_start:
294: {
295: RADV_DNSSL->lifetime = 0;
296: RADV_DNSSL->lifetime_mult = DEFAULT_DNS_LIFETIME_MULT;
297: };
298:
299: radv_dnssl_item:
300: | DOMAIN radv_dnssl_node
301: | LIFETIME radv_mult { RADV_DNSSL->lifetime = $2; RADV_DNSSL->lifetime_mult = radv_mult_val; }
302: ;
303:
304: radv_dnssl_finish:
305: {
306: if (EMPTY_LIST(radv_dns_list))
307: cf_error("No domain in DNSSL section");
308:
309: struct radv_dnssl_config *cf;
310: WALK_LIST(cf, radv_dns_list)
311: {
312: cf->lifetime = RADV_DNSSL->lifetime;
313: cf->lifetime_mult = RADV_DNSSL->lifetime_mult;
314: }
315: };
316:
317: radv_dnssl_opts:
318: /* empty */
319: | radv_dnssl_opts radv_dnssl_item ';'
320: ;
321:
322: radv_dnssl:
323: radv_dnssl_node
324: | '{' radv_dnssl_start radv_dnssl_opts '}' radv_dnssl_finish
325: ;
326:
327:
328: radv_mult:
329: expr { $$ = $1; radv_mult_val = 0; }
330: | MULT expr { $$ = 0; radv_mult_val = $2; if (($2 < 1) || ($2 > 254)) cf_error("Multiplier must be in range 1-254"); }
331: ;
332:
333: radv_sensitive:
334: /* empty */ { $$ = -1; }
335: | SENSITIVE bool { $$ = $2; }
336: ;
337:
338: CF_ADDTO(dynamic_attr, RA_PREFERENCE { $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_ENUM_RA_PREFERENCE, EA_RA_PREFERENCE); })
339: CF_ADDTO(dynamic_attr, RA_LIFETIME { $$ = f_new_dynamic_attr(EAF_TYPE_INT, T_INT, EA_RA_LIFETIME); })
340:
341: CF_CODE
342:
343: CF_END
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